window.onload = function(){
	//获取显示隐藏按钮dom数组
	let showBtnArr = document.getElementsByClassName('fa-caret-down');
	//获取订单明细dom数组
	let detailetBoxArr = document.getElementsByClassName('order-detailet');
	//默认所有订单明细都隐藏
	for(let i = 0; i < detailetBoxArr.length; i++){
		detailetBoxArr[i].style.display = 'none';
	}
	for(let i = 0; i < showBtnArr.length; i++){
		showBtnArr[i].onclick = function(){
			if(detailetBoxArr[i].style.display == 'none'){
				detailetBoxArr[i].style.display = 'block';
			}
			else{
				detailetBoxArr[i].style.display = 'none';
			}
		}
	}
}